摘要
分析了引起光纤陀螺仪零偏的因素。为满足实际应用的需求,对地球自转和陀螺仪自身工艺误差所引起漂移了进行标定,建立了与温度和温度变化率相关的漂移模型。设计了在变温度环境下的陀螺仪漂移实验,结合实验数据采用最小二乘法(LSE)对漂移曲线进行拟合,利用漂移模型进行陀螺仪温度漂移趋势向的预测。经过温度漂移补偿之后陀螺仪的零偏可以减小为原来的15%。
The factors that causing the zero drift of the fiber optic gyro were analysed. The drift caused by the earth rotation and the fabrication error of the FOG was calibrated in order to meet the needs of practical application. The drift model related to temperature and rate of tempera- ture change was built. ;The drift experiment of FOG was conducted under the condition of variable temperature. With the experimental data we fit the drift curve using the least square method and then predict the trend of the temperature drift using the drift model. The zero drift after compensation decreased to 15% of the drift before compensation.
出处
《机械与电子》
2013年第1期19-22,共4页
Machinery & Electronics
关键词
光纤陀螺仪
零偏
最小二乘法
温度变化率
FOG
zero drift
least square method
rate of temperature change
